You really think that we need to prove to you something? Services that we represent have got thousands of satisfied clients. We don't have so much time to waste it for discussion with you or prove you something.
This sentence has made it all clear. You don't lose anything for proving that your service works. Maybe a minute of your time?
Your service is most likely a scam. Everyone, stay away from it!
I wouldn't even be surprised if the mixer actually worked just to get some trust and a bigger deposit.
